Valve and nozzle



W.\NOBLE.

yVALVE AND NozzLE.

APPLICATION FILED APR. 18, |919.

lAUSO Patented Jan. 10, 1922.

WARREN' NOBLE, 0F PROVIDENCE, RHODE ISLAND, ASSIGNOR TO TUBULAB 'WOVENFABRIC COMPANY, OF PAWTUCKET, RHODE ISLAND, A CORPORATION OF RHODE yISLAND.

VALVE AND NOZZLE.

Specification of Letters Patent.

Patenten aan. io, ieee.

Application led April 18, 1919. Serial No. 291,918.

To @ZZ whom it may concern:

' Be it known that I, WARREN NOBLE, a subject of the King of GreatBritain, residing at Providence, in the county of Providence and Stateof Rhode Island, have inventednew and useful Improvements in Valves andNozzles, of which the following is a speciication.

The present inventionhas two principal i objects, rst, to provide aquick closing valve aforesaid objectsin a single structure adapted toserve as the nozzle of a liquid delivering pipe, such for example asa'hose adapted and connected for supplying gasoline to motor cars, and Iwill in the following lspecification describe this particular embodimentin order to explain the fundamental characteristics of the invention. Itis to be understood, however, that the specific embodiment thus show'nand ldescribed i-s not intended as a limitation in the construction anduse of the invention, for thev same strainer invention may be applied inany combination and for any use where it is desired to filter foreignmatter from liquid tiowing through a conduit; and the valve means may beapplied in where a valve is useful.

The invention'consists in the novel constructions and combinations whichI will describe in the following speci cation, and in the principlescontained therein, and all modifications and other embodiments of suchprinciples embraced within the scope ,of the appended claims. Referringnow to the drawings,

Figure l is a longitudinal sectional view of lthe delivery nozzle for agasoline hose any connection embodying the principles of the invention,

the valve therein being shown closed. Fignre 2 is a similar view of thatpart of the nozzle which includes the valve, but representing the valvein its open position. Figures 3 and 4 are cross sections on lines 3 3and 4 4, respectively, of Figure 1. Figure 5 is a view representing thedevelopment of'the camlelements in the valve operating spindle. Figure 6isa crosssection on line 6-6 of Figure 1, showing that part of thenozzle in which the strainer is located.

Like reference characters designate the same parts in all the fi res.

7 designates the body or shell of the structure which is provided with avalve chamber 8, a branch 9 through which the liquid enters, and anoutlet branch 10. At the junction between the branches 9 and 10 is avalve seat l11 with' which coacts la valve 12, the latter being cupshaped, or in other words of tubular form with an end wall, and arrangedwith the corner between its end wall and its side walls adapted to makecontact with the seat 11. Ordinarily the valve seat will be madecircular and the valve cylindrical but the invention is not necessarilylimited to that form. Likewise without intending to imply any limitationthereby, I will state thatthe valve is preferably made of sheet Inetalby well understood drawing processes from a fiat blank.

Numerous variationsI in the form, construction, and material of thevalve may be made provided only itis constructed to make a tight jointwith the valve seat, and that it has both an interior opening adapted tocontain a spindle or equivalent operating means and a cross web or wallpreventing flow through its interior.

This valve is fitted to slide freely endwise in the valve chamber branch8 of the casing, and it receives in its interior a freely rotatablespindle 13 from which projects a stem 14 carrying a handle 15. rIhespindle is formed with cam grooves 16, 1'( in which balls 18, 19 arepartly contained, which balls are coniined in holes in the side walls ofthe valve and project into longitudinal guide grooves 20, 21 of thevalve caslng. The combined depth of the cooperatlng guide and grooves,plus the space b etween the casing wall and the spindle, which admitsthe sides ofthe cup valve, is approxlmately equal to the diameter of theballs and these grooves are preferably shaped conformably to thespherical curvature of the ance of the balls and are of approximatelyequal d epth whereby the balls occupy avcentral position with respect tothe valve in other words the valve wall surrounds an equatorial zone ofeach ball. y

As the cam igrooves 16 and 17 are inclined :to the axis o `the spindle,that is, have a ends, the end nearer to the valve seat having a low.helix angle, or slow pitch, and the baloove up to the end more remotefrom t e valve seat having a steep pitch orv relatively very fast lead.lThus when the valve is wholly or nearly closed the balls occupy partsof the cam groove which have the small angle, whereby a very powerfulclosing pressure may be exerted; while the Steep pitch of the balanceofthe cam grooves enables the valve to be widely opened with a smallangle of rotation of the o erating' stem. Thus I secure the twodeslrable effects of quick opening and closing of the ,valve and apowerful closing pressure. enabling the valve to be firmly seated andtightly closed. f y c For the purposes of this specification I willdesignate the balls by the term cam rider, and within Vthi-s term Iinclude all equivalents for the balls 19 which are capable of. travelingin or on guides and of being propelled by cam elements.l I prefer to useballs as such cam ridersrather than sliding riders on account ofthelower frictional resistance of such balls, but I\claim protection forthe essential combination including any sort of riders whether capableof rolling or having a sliding motion.

I have shown two cam grooves, two guide grooves, and two cam riders inthis design ut I may use more than two'. Whatever the number of thesemembers may be they are preferably spaced equally around the axis of thestructure. In the design shown eachcam groove is included within lessthan half of the circumference of the spindle, and in fact within suchasmall circumferential angle that approximately a quarter turn of thehandle is sufficient tov move the valve from fully'opened to fullyclosed position, and vlce versa. I may, `however, make the cam grooveswith a lower lead angle or provide such a number of cam grooves thattheir circumferential extent is greater than'their angular spacingaround the axis, and in.

doing so I may, if necessary, distribute the `cam riders lengthwise ofthe valve in different transverse planes in order to avoid interferenceof the camjgrooves with one another.

The valve and spindle are retained in the casing by any ordinary orother suitable stuffing box 22 and retaining collar 23.

The above described type of valve and operating mechanism has variousadvantages among whichmay be named the following; that the constructionis very compact and consists of few and simple parts, inexpensive tomake and easily assembled, thatthe pro-` vision of cam riders separatefrom the valve, and particular the ball type of rider gives low cost andeiiicient operation by reducing friction, and that the tubular or cuptype of valve permits simpler flow lines of the fluid tube 24 extendswell into the casing and on I its upper end has a hemisnherical cap 26.Between this cap and the nipple or ferrule 25 the walls of the tube areslit lengthwise to form four pairs of flaps 27 which are bent inward andthereby provide intermediate openings 28. These openings are thepassages throughwhich the gasoline or other vliquid flows on its way tothe discharge orifice of the nozzle, and they are surrounded by a finegauze screen 29 which is wrapped about that part of the tube and theends of which are confined by the ferrule 26 and the cap 25. The screenmay be permanently secured by solder, or it may be fastened mechanicallyin a detachable manner. It provides a filter on the outside of the tubethrough which the gasoline must flow before being finally delivered, andon the exterior of which all foreign matter carried by the gasoline isdeposited. This tube with the filter upon it is readily detachable forcleaning, and as all the deposited matter is lodged on the outside ofthe filter screen, cleaning is made easy.

The valve means and filter are both parts of the same structure, namely,a gasoline delivery valve, co-operating in the delivery of purifiedgasoline, wherefore I claim them in lcombination with this application;but each is adapted to be used in other connections and combinations,and this is particularly true of the valve and the operatingmechanism'therefor, wherefore I do not limitmy protection for thesemeansto the particular combination and construction' shown. Among themodifications in my contemplation are all reversals of the elementshereinbefore described. It may be considered inrespect to the valve,that the casing is an outer member and the stem is an inner member,either one of which may be rotatable and the other mounted stationary,and either ofwhich also, whether rotatable or stationary, may containthe cam'grooves, and the other may contain the guide grooves orguidewa-ys. Also within my contemplation is vvit to form the guideelements and cam elements otherwise than as grooves, and to modify thecam riders in correspondence. f What I claim and desire to secure byLetters Patent is: 4

1. A valve device comprising a casing, a valve, an operating'member anda cam rider separate from the valve, the valve being interposed betweensaid casing and operating member and having an opening in which 'the camrider is confined, one of thevmembers constituted by the casing and'operating member being movable relatively to the other, and one of themhaving a cam p0rtion, the other having a guide portion, with which camand guide portions said rider is engaged, whereby'movement' of one ofsaid members relatively to the other is eii'ective to displace thevalve. v

2. A valve device comprising a casing having a seat, a valve thereincooperating with said seat and having a tubular part, a relativelyrotatable operating stem entering said tubular part, and a cam rider,one of the members constituted by said casing and operating stem havinga cam portion and the other having a guide po ion,(and the cam riderbeing seated in an opening in said tubular part of the valve and engagedwith both said cam tion.

'3. Avalve device comprising a casinghaving a seat, a valve thereincooperating with said seat and having a tubular part, a relaportion andsaid guide portively rotatable operating stem entering said tubularpart, and a cam rider, one of the members constituted by the casing andstem having a substantially helical cam groove 'and the other having anaxially extending guideway, and the cam rider being confined infahole-in the valve and projecting into both the cam groove and theguideway.

f 4. A valve device comprising a casing having a seat, a valve thereincooperating with said seat and having a tubular part, a relativelyrotatable operating stem entering said tubular part, and a cam rider,one of the members constituted by said casing and operating stem havinga cam portion and the other having a guide portion, and the cam sameplane in that part which acts'I upon the rider inopening the valve.

5. A valve device comprising'a casing having a seat, a valve thereincooperating-with said seat and having a tubular part, a relativelyrotatable operating stem entering said tubular part, and a cam rider,one of the members constituted by the casing and stem vhaving asubstantiallyl helical cam groove and the other having an axiallyextending guideway, and the cam rider being confined 1n a hole in thevalve and projecting into both the cam groove and the guideway, said camhaving a low helix angle in that part which acts on the rider. when thevalve is c1osed,-and having a steeper pitch in other parts. I

6.- A valve mechanism comprising in com b ination with a seat, a valvehaving a tubular portion, inner and outer concentric cooperating membersone-of which is stationary and the other is rotatable,'arranged with anannular space between them in which the tubular part of the valve isinterposed, one of them having also a cam and the other a guide element,and a cam rider seated in the interposed part of the valve and otherwiseindependent thereof and engaged with both the cam and the guide elementwhereby to cause displacement of the valve when one of said members isrotated relatively to the other. v 7 l 7 A valve comprising a casinghaving an annular seat, a sheet metal cup arranged t0- move endwise insaid casing having its bottom adjacent to said seat and of a diameteradapting it to coact therewith as a valve, said casing having inlet andoutlet passages at opposite sides of the seat, a rotatable operatingmember in substantially coaxial rel WARREN NOBLE.

